复合材料低的比例极限可由晶须端部应力集中所导致的低应力局部塑性变形来解释。
The low proportional limit may be explained by localized plastic deformation under low macroscopic stress caused by stress concentrations at the ends of SiC whiskers.
在金属压力加工中，利用电塑性效应可降低金属变形抗力，增加金属成型极限，改善产品表面质量。
Electroplastic effect can be employed to increase metal forming limit, reduce deformation resistance and improve surface quality of product.
结构的本构关系可以考虑强度的强化作用和变形超过极限状态后的强度下降，而把理想弹塑性假定做为一种特殊情况来处理。
The method may be applied to structures composed of strength hardening and strength softening with the ideal elastoplastic state as their special case.
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